Island



w. P. THOMPSON.

TENTERING MACHINE. APPUCATION FILED Nov. 6. 1916.

1,826,309. Patented Dec. 30,1919.

3 SHEETS-SHEET I.

W. P. THOMPSON.

'TENTERING MACHINE.

APPLICATION man NOV. 6. I916.

Patented Dec. 30, 1919.

3 SHEETS-SHEET 3 Wlinesses "mar stares ainvr canton.

WILLIAM P. THOMPSON, OF PROVIDENCE,.RHODE ISLAND.

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Specification of Letters Patent.

Patented Dec. 30, 1919.

Application filed. November 6, 1916. Serial No. 129,646.

To all whom it may concern:

Be it known that I, WILLIAM P. THOMP- son, of the city and county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Tentering-Machines; and I do hereby declare the following specification, taken in connection with the accompanying drawings, forming a part of the same, to be a full, clear, and exact description thereof.

The invention relates to machines for tentering cloth, in which traveling chains provided with clamps to engage and carry the cloth are caused to travel along guiderails which aresgiven a reciprocating movement as the chains feed the cloth through the machine.

One feature of the invention relates to the mechanism for transmitting motion to the traveling chains on the guide-rails and has for its object to apply a double drivingmechanism, one for each of the revoluble chains, said driving mechanisms beingarranged off center of the machine. The advantage of this novel arrangement of driving mechanism is that by reason of the double drive the swingingmotion of the guide-rails will in no .way afiiect the drive of the chains, which will be uniform at all times.

Another advantage that results from my novel double-driving mechanism resides in the fact that with this arrangement the radius for the swinging of the driving shafts is made exactly the same as the radius at which the rails swing from the center of the machine, all of the intermediate cross-heads thereby obviating any slipping, cramping or binding of the driving mechanism at each stroke of the swing which happens when the cross-shaft is driven from and pivoted to the exact center of the machine.

A further feature of the invention relates to a novel mechanism for reciprocating the guide-rails and has for its object to obviate the use of a movable crank-pin in the driving crank or disk and to provide in place thereof a more eflicient mechanical arrangement.

The 111V8I1131011' also includes the further features hereinafterjdescribed and set forth in the claims. 1

Referring to the drawings,

. Figure 1 isa top plan view. of so much of the tentering machine as is necessary to show the application of the present invention.

Fig. 2 is a side elevation of the same. Fig. 3 is an end elevation of the same. Figs. 4 and 5 are details. As shown in the drawings, the machine comprises a pair of guide-rails 1 and 1, which are pivoted on blocks 2 adjustably mounted on transverse frames or supports 3,'said blocks being adjusted by means of the screw-rods 4 in the usual manner. The

frames 3 vary in number according to the length of the machine and are pivoted upon standards 5 as shown in Fig. 2. The guiderails 1 and 1 carry the sprocket-wheels 6, 6 around which the conveying chains pass, and which serve to operate said chains.

Said sprocketwheels 6, 6 are secured upon the upper end of vertical shafts 7, 7

which are mounted in bearings 8, 8 formed in the circular casings 9, 9. Secured upon the lower end of the shafts 7, 7 are bevelgears 10, 10. Secured to the lower end of the casings 9, 9 is a frame 11, 11 which is provided with a central rib 12 forming a bearlng or support for the lower end of .19 which is engaged by a projection formed upon the uppersurface of a cap 21, 21 which issecured to the bottom of the frame 11, as shown in Fig. 4.

The inner ends-of the shafts 18, 18 are provided with split yokes 22, 22 having projections 23, 23 pivoted in bearings 24, 24 formed in the frame of the machine, as shown in Fig. 1. Secured upon the shafts 18, 18 adjacent the inner ends thereof are bevel-gears 25, 25 which are arranged to engage bevel-gears 26, 26 mounted upon the upper ends of vertical shafts 27, 27. lhe upper ends of said shafts 27, 27 are mounted in bearings 28, 28 secured to the frame of the machine. and the lower ends are mounted in the vertical bearings 29, 29 upon the base of the machine.

Secured upon the shafts 27 27 are gears 30, 30 which are arranged to mesh With each other. Secured upon the shaft 27 below the gear 30 is a bevel-gear 31 which engages a small bevel-gear 32 upon the inner end of a shaft 33 mounted in the bearing-blocks 34; secured to the frame of the machine. The shaft 33 has loosely mounted thereon two gears 35 and 36 of different diameters, which engage gears 37 and 38 respectively. The gear 37 is secured upon the main driving shaft 14:, whichrcarries a main driving pulley 10 upon its outer end, to which power is applied. The gear 38 is provided with a fixed clutch member 41 adapted to be engaged by a movable clutch member splined to the shaft 33 and 0perated by a lever 43.

The gear 38 is secured upon the inner end of a shaft 16 which is mounted in bearing-blocks 1-7 secured upon the frame of the machine. Secured upon the outer end of the shaft 46 is a disk 48 having a pin 4L9 rigidly secured upon its outer face adjacent the periphery thereof.

A connecting rod 50 has one end pivotally mounted upon the pin 49 and its other end pivotally mounted in the upper free end of a short lever 51. The other end of the lever 51 is pivotally mounted in the top of a triangular frame 52 formed upon or secured to the base of the machine. A. second lever 53, which is longer than the lever 51, has its lower end pivoted to the lower portion of the frame 52 in alinement with said lever 51. The levers 51 and 53 are provided with a series of holes 51 and 53 respectively and said levers are adjustably con- ,nected together by an adjustable link 54*- secured by means of bolts engaging the holes 51 and 53.

The lever 53 is provided with an upright extension 55 having at its upper free end a. universal joint 56 which connects it with an actuating rod 57. Said actuating rod carries at its opposite end a pivoted yoke 58 which straddles a transverse frame 3 and engages an oval bearing surface 59 formed thereon. The yoke 58 is held in engagement with the frame 3 by means of a bolt 60, as shown in Fig. 2.

With the above construction of mecha nism for reciprocating the guide-rails, it will be seen that the reciprocating movements of the guide-rails can be varied by simply chan ing the adjustable link 54 from one set of he es in the levers 51, 53 to another Set of holes therein.

It will also be seen that with the above described construction of driving mecha nism that the length of the driving shafts 18, 1 8"from the center of the pivoted projection 23 to the center of the upright shaft 7 will be the same length as the distance from the center of the machine to the center of the pivoted bearing upon block 2, so that the radius of the swinging movement of the driving shaft 18, 18 will be the same as the radius of the swinging of the transverse frame 3 at all times.

lVhat I claim as my invention and desire to secure by Letters Patent is 1. I11 a machine of the character described, the combination with guide-rails for the conveying devices, of driving mechanism for said conveying devices pivoted on each side of the center of the machine.

2. In a machine of the character described, the combination with guide-rails for the conveying devices, of a sprocket-wheel. for each guide-rail and a separate driving mechanism for each sprocket-wheel.

3. In a machine of the character described, the combination with guide-rails for the conveying devices, of a sprocket-wheel for each guide-rail and a separate driving mechanism for each sprocket-wheel independently pivotedon'each side of the. center of the machine.

4;. In a machine of the character described, the combination with guide-rails for. the conveying devices, of a sprocketwheel for each guide-rail, a series of pivoted transverse frames between said guide-rails,' a swinging driving shaft for each sprocketwheel on separate pivots, the radius of swing of said driving shafts being the same as the radius of swing of each transverse frame,

and means for swinging said driving shafts and transverse frames.

5. In a machine of the character described, the combination with guide-rails for the conveying devices, of a rotary disk, a pin rigidly secured therein, adjustable connecting means interposed between said pin and one of the guide-rails for reciprocating the,

same, and means for rotating said disk.

6. In a machine of the character described, the combination with guide-rails for the conveying devices, of a rotary disk, a pin rigidly secured therein, a connecting rod pivotally secured at one end to said pin and adjustably pivoted at the other end to' a pivoted lever and connecting means interposed between said .lever and one of the guide-rails.

7. In a machine of the character described, the combination with guide-rails v for the conveying devices, of a rotary disk,

a pin rigidly secured therein, a connecting rod pivotally secured to said pin, an actuating rod pivotally secured to one of said guide-rails, two pivoted levers interposed between said connectingrod and said actuating rod, and means connecting said levers.

8. In a machine of the character described, the combination with guidesrails for the conveying devices, of a rotary disk, a pin rigidly secured therein, a connecting rod pivotally secured to said pin, an actuating rod pivotally secured to one of said guide-rails, two pivoted levers interposed between said connecting rod and said actuating rod, and adjustable means connecting said levers.

9. In a machine of the character described, the combination with guide-rails for the carrying devices, of a rotary disk, a pin rigidly secured therein, a connecting rod pivotally secured to said pin, an actuating rod pivotally secured to one of the guiderails, two pivoted levers of different lengths interposed between said connecting rod and said actuating rod, and an adjustable connection between said levers.

10. In a machine of the character described, the combination with guide-rails for the carrying devices and a series of pivoted transverse frames connecting said guide-rails, of a rotary disk, a pin rigidly secured therein, a connecting rod having one end pivotally mounted upon said pin, and the opposite end pivotally connected to a short lever pivotally mounted in a frame secured to the base of the machine, a long lever pivoted at one end to the. base of the machine and at the opposite end to one end of an actuating rod, the other end of said actuating rod being pivotally connected to one of said transverse frames, and an adjustable link connecting said short and long levers.

11. In a machine of the character described, the combination with guidesrails for the conveying devices, of a sprocketwheel for each of said guide-rails, a series of transverse frames connecting said guiderails and pivoted at the center of the machine, a separate driving shaft fon each sprocket-wheel pivoted on each side of the center of the machine, the radius of swing of said driving shafts being the same as the radius of swing of said transverse frames, and means for swinging said trans verse frames and said driving shafts.

12. In a machine of the character described, the combination with guide-rails for the conveying devices, of a sprocketwheel for each guide-rail, a separate driving shaft for each sprocket-wheel having a pivoted support at each end thereof, and means for operating said driving shafts.

13. In a machine of the character described, the combination with guide-rails for the conveying devices, of a sprocketwheel for each guide-rail, a swinging driving shaft for each sprocket-wheel, means for swinging said driving shafts, and means for rotating said driving shafts.

14. In a machine of the character described, the combination with a suitable frame, of two guide-rails for the conveying devices, a circular casing at one end of each guide-rail, a sprocket-wheel shaft mounted in each of said casings, a separate driving shaft for each of said sprocket-wheel shafts having a pivot-ed support at one end in the main frame and a pivoted support at the opposite end in said circular casings, gears connecting said shafts, and means for operating said driving shafts.

15. In a machine of the character described, the combination with a main frame,

of a series of transverse frames, two guiderails supported on said transverse frames, a circular casing at one end of each of said guide-rails, a sprocket-wheel shaft mounted in each of said casings, a separate driving shaft for each of said sprocket-wheel shafts having a pivoted support at one end in said casings and a pivoted support at the opposite end in the main frame, gears connecting said shaft, means for operating said driving shafts, and means for swinging said transverse frames.

16. In a machine of the chi racter described, the combination with a main frame, of a series of pivoted transverse frames, two guide-rails for the conveying devices sup ported on said transverse frames, a circular casing at one end of each of said guide-rails, a sprocket-wheel and a sprocket-wheel shaft mounted in each of said casings, a separate driving shaft for each of said sprocketwheel shafts having a pivoted support at one end in said casings and a pivoted support at the opposite end in the main frame, gears connecting said shafts, a rotary disk, an adjustable connection between said r0- tary disk and one of said guide-rails for reciprocating the same, a main driving shaft, and means connecting said main driving shaft with said rotary disk and said pivoted driving shafts.

WILLIAM P. THOMPSON.-

Witnesses:

W. H. THURSTON, J. H. THURSTON. 

